A wall tile is of dimension 25cm*12cm .how many tiles are required to cover a wall of measurement 4m*3m.
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Answer:
[1m = 100cm]
area of wall = l×b
L= 4m = 400cm. B= 3m = 300cm
400cm×300cm = 120000cm²
area of tile = l×b
L= 25cm. B= 12cm
25cm×12cm = 300cm²
number of tiles = area of wall ÷ area of tile
= 120000÷300 = 400
therefore 400 tiles are required
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